Tiny discs can levitate in the upper atmosphere using sunlight alone
An illustration of solar-powered levitating discs Schafer et al. Nature Fingernail-size discs that levitate in sunlight could someday carry sensors through some of the thinnest and coldest reaches of the atmosphere. By flying higher than commercial aircraft or weather balloons can, such swarms could reveal new insights about Earth’s changing weather and climate patterns. The…
